I know this is probably the 789,243 post about an exhaust, but i have exhausted (n0 pun intended) the search button. i have a 99 civic lx SEDAN and i wan't no other exhaust other than the WS2. i know i can get a ex header, and bolt on cat and then use the ex cpupe system but i dont really require any performance gain at the time so i dont want to do the header/cat ex setup. so, can i use the DX coupe system? or am i limted to only using ex systems with the conversion?